They are the site of two of the greatest engineering accomplishments ever attempted by man. In this adventure, host Huell Howser first visits the Palm Springs Aerial Tramway which takes passengers from the warm desert floor to a snowy alpine environment in a matter of minutes. This tramway which opened in 1963 was constructed on such a sharp slope that it was impossible to build roads, and the only way to construct it was by helicopter. Huell takes advantage of this opportunity to explore the tunnel and also to make some unusual discoveries once inside. Whether on the top of the mountains on a tram, or under the mountains in a tunnel, Huell discovers that the San Jacinto Mountains are very much a part of California's Gold.